code: def test_request_server_info(
      self, mock_request_server_info: MagicMock
  ) -> None:
      s = bcs.ClientSession()
      s.request_server_info()
      assert mock_request_server_info.call_count == 1
      assert mock_request_server_info.call_args[0] == ()
      assert mock_request_server_info.call_args[1] == {}
  
file_path: bokeh/tests/unit/bokeh/client/test_session__client.py
imports: from __future__ import annotations
  import pytest
  from unittest.mock import MagicMock, patch
  import bokeh.client.session
label_desc: Use image node_id 11 for calling the Test_ClientSession obj's underlying member method code with example usage: obj.test_request_server_info(mock_request_server_info) without return types